<template>
    <div class="login">
        <el-form ref="loginForm" :model="loginForm" :rules="loginRules" class="login-form">
            <h3 class="title">{{projectInfo.name}} 后台管理系统</h3>
            <el-form-item prop="username">
                <el-input v-model="loginForm.userName" type="text" auto-complete="off" placeholder="账号">
                </el-input>
            </el-form-item>
            <el-form-item prop="password">
                <el-input
                        v-model="loginForm.password"
                        type="password"
                        auto-complete="off"
                        placeholder="密码"
                        @keyup.enter.native="handleLogin"
                >
                </el-input>
            </el-form-item>
            <el-form-item prop="code">
                <el-input
                        v-model="loginForm.code"
                        auto-complete="off"
                        placeholder="验证码"
                        style="width: 63%"
                        @keyup.enter.native="handleLogin"
                >
                </el-input>
                <div class="login-code">
                    <img :src="codeUrl" alt="" @click="getCode"/>
                </div>
            </el-form-item>
            <el-checkbox v-model="loginForm.rememberMe" style="margin:0 0 25px 0;">记住密码</el-checkbox>
            <el-form-item style="width:100%;">
                <el-button
                        :loading="loading"
                        size="medium"
                        type="primary"
                        style="width:100%;"
                        @click.native.prevent="handleLogin"
                >
                    <span v-if="!loading">登 录</span>
                    <span v-else>登 录 中...</span>
                </el-button>
            </el-form-item>
        </el-form>

        <!--  底部  -->
        <div class="el-login-footer">
            <span>Copyright © {{projectInfo.copyrightYear}} {{projectInfo.copyrightCompany}} All Rights Reserved.</span>
        </div>
    </div>
</template>

<script lang="ts">
  import {Component, Provide, Vue} from 'vue-property-decorator';
  import {Action, Getter} from 'vuex-class';
  import {getKaptchaImage} from '@/api/common';

  @Component
  export default class Login extends Vue {

    codeUrl = '';
    @Getter('projectInfo') private projectInfo: any;

    @Provide()
    cookiePassword = '';
    @Provide()
    loginForm: {
      userName: string;
      password: string;
      rememberMe: boolean;
      code: string;
      key: string;
    } = {
      userName: 'admin',
      password: '123456',
      rememberMe: false,
      code: '',
      key: ''
    };
    @Provide()
    loginRules = {
      userName: [
        {required: true, trigger: 'blur', message: '用户名不能为空'}
      ],
      password: [
        {required: true, trigger: 'blur', message: '密码不能为空'}
      ],
      code: [{required: true, trigger: 'change', message: '验证码不能为空'}]
    };
    @Provide()
    private loading = false;

    @Action('Login') private Login!: (loginForm: any) => any;


    handleLogin(): void {
      (this.$refs.loginForm as any).validate((valid: boolean) => {
        if (valid) {
          this.loading = true;
          this.Login(this.loginForm).then((res: any) => {
            this.loading = false;
            return this.$router.push('/');
          }).catch((err: any) => {
            console.log(err);
            this.loading = false;
            this.getCode();
          });
        }
      });
    }

    getCode() {
      getKaptchaImage().then((res: any) => {
        this.codeUrl = res.data.base64Image;
        this.loginForm.key = res.data.key;
      }).catch((err: any) => {
        console.log(err);
      });
    }

    created() {
      this.getCode();
    }
  }
</script>

<style lang="scss" scoped>
    .login {
        display: flex;
        justify-content: center;
        align-items: center;
        height: 100%;
        background-image: url("../assets/image/login-background.jpg");
        background-size: cover;
    }

    .title {
        margin: 0 auto 30px auto;
        text-align: center;
        color: #707070;
    }

    .login-form {
        border-radius: 6px;
        background: #ffffff;
        width: 400px;
        padding: 25px 25px 5px 25px;

        .el-input {
            height: 38px;

            input {
                height: 38px;
            }
        }

        .input-icon {
            height: 39px;
            width: 14px;
            margin-left: 2px;
        }
    }

    .login-tip {
        font-size: 13px;
        text-align: center;
        color: #bfbfbf;
    }

    .login-code {
        width: 33%;
        height: 38px;
        float: right;

        img {
            height: 100%;
            width: 100%;
            cursor: pointer;
        }
    }

    .el-login-footer {
        height: 40px;
        line-height: 40px;
        position: fixed;
        bottom: 0;
        width: 100%;
        text-align: center;
        color: #fff;
        font-family: Arial, serif;
        font-size: 12px;
        letter-spacing: 1px;
    }
</style>
